fix(client/sse): release reader lock on disconnect to prevent ~50MB leak#1961

MukundaKatta wants to merge 2 commits intomodelcontextprotocol:v1.xmodelcontextprotocol/typescript-sdk:v1.xfrom

MukundaKatta:fix/sse-reader-lock-leakMukundaKatta/typescript-sdk:fix/sse-reader-lock-leakCopy head branch name to clipboard